Finding the Third Proportional to 9,731.25 and 21,990

Step by Step Solution

1. Step 1: Write the proportion equation
   9,731.25 : 21,990 = 21,990 : x
2. Step 2: Convert to fraction form
   9,731.25/21,990 = 21,990/x
3. Step 3: Cross multiply
   9,731.25x = 21,990 × 21,990
4. Step 4: Simplify right side
   9,731.25x = 483,560,100
5. Step 5: Solve for x
   x = 483,560,100/9,731.25
6. Step 6: Final answer
   x = 49,691.47